| Species | Santa Cruz Island | LA Central | LA South | Catalina Island | SDN |
|---|---|---|---|---|---|
| Anemone spp | 0 | 0 | 0 | 0 | 1 |
| Bat star | 149 | 17 | 70 | 27 | 1 |
| Black starry urchin | 3 | 0 | 0 | 8 | 1 |
| Blood star | 4 | 1 | 0 | 0 | 0 |
| Brachiopod spp | 0 | 3 | 0 | 0 | 125 |
| Cabezon | 0 | 0 | 0 | 0 | 2 |
| California cone snail | 6 | 1 | 4 | 15 | 2 |
| Chestnut cowrie | 38 | 20 | 17 | 56 | 57 |
| Chiton spp | 11 | 6 | 0 | 0 | 0 |
| Coffee bean | 4 | 1 | 0 | 1 | 1 |
| Coronado urchin | 3 | 0 | 1 | 66 | 1 |
| Crab | 3 | 0 | 1 | 4 | 1 |
| Flat worm | 1 | 0 | 0 | 10 | 1 |
| Gem murex | 10 | 6 | 19 | 21 | 0 |
| Giant rock scallop | 84 | 30 | 9 | 18 | 23 |
| Giant spined star | 2 | 0 | 0 | 1 | 0 |
| Green abalone | 0 | 0 | 0 | 5 | 1 |
| Heart urchin | 0 | 0 | 0 | 1 | 0 |
| Idas miter | 0 | 0 | 0 | 1 | 0 |
| Kellets whelk | 9 | 3 | 3 | 3 | 3 |
| Keyhole limpet | 8 | 3 | 2 | 1 | 1 |
| Leafy hornmouth | 1 | 1 | 0 | 8 | 0 |
| Leather star | 1 | 0 | 0 | 0 | 0 |
| Linckia spp | 6 | 0 | 0 | 35 | 2 |
| Navanax | 1 | 0 | 0 | 0 | 0 |
| Nudibranch | 15 | 12 | 19 | 33 | 52 |
| Ocenebrinae snail | 1 | 0 | 2 | 32 | 0 |
| Octopus | 1 | 0 | 1 | 1 | 1 |
| Other scallop spp | 4 | 0 | 1 | 8 | 29 |
| Oyster | 0 | 0 | 0 | 2 | 0 |
| Peppered sea cucumber | 25 | 4 | 3 | 3 | 0 |
| Pink abalone | 2 | 0 | 1 | 10 | 1 |
| Pink scallop | 13 | 0 | 0 | 1 | 1 |
| Pinto abalone | 0 | 1 | 0 | 0 | 0 |
| Pleurobranch | 8 | 0 | 0 | 34 | 8 |
| Purple urchin | 346 | 1 | 7 | 23 | 58 |
| Rainbow star | 7 | 4 | 1 | 7 | 0 |
| Red sea cucumber | 27 | 22 | 7 | 13 | 0 |
| Red urchin | 257 | 29 | 37 | 16 | 55 |
| Scorpionfish | 0 | 0 | 0 | 1 | 0 |
| Sea hare | 0 | 0 | 0 | 0 | 1 |
| Shrimp spp | 2 | 1 | 0 | 0 | 1 |
| Speckled scallop | 0 | 0 | 0 | 1 | 0 |
| Tegua eiseni | 2 | 0 | 0 | 0 | 0 |
| Tegula aureotincta | 0 | 0 | 0 | 3 | 0 |
| Tegula brunnea | 20 | 4 | 0 | 1 | 14 |
| Tegula eiseni | 6 | 0 | 0 | 35 | 2 |
| Tegula regina | 4 | 0 | 0 | 0 | 3 |
| Tegula spp | 0 | 0 | 0 | 0 | 15 |
| Three cornered trophon | 5 | 0 | 0 | 1 | 0 |
| Toothed whelk | 0 | 0 | 0 | 1 | 0 |
| Warty sea cucumber | 5 | 0 | 4 | 12 | 11 |
| Wavy top turban snail | 11 | 0 | 2 | 1 | 1 |
| White urchin | 0 | 0 | 0 | 1 | 0 |